Molf construction.



0. V. KHAN.

MOLD OONSTBUOTIONQ Arru'ou'xon mum 18.22, 1912.

Patented Mar. 25, 1913.

WIMESSES:

ITE STATE$ PATENT OFFICE.

999. Specificaflon or LetiersYatent.

Patented Mar. 25,1913.

Apelieation filed Aufiufi 23, 1912. Serial K0. 716,437; g

' To all 'uuwmit may concern:

Be it known that I, OTHO V. Kmm'a citizen of the United States, residingat T0 ronto, in the Province of Ontario and Dominion of Canada, haveinvented certain new and useful Improvements in Mold Construction, ofwhich the following is a full, clear, and exact. description, uchas'will en:

able others skilled'in the art to which il an pertains to make and usethe same.

This invention relates to mnail structure and with respect to certainmore speeific features, to a structure of this type which may he used infounding.

One ofthe objects of the invention is to provide a practieable andellioient article of (his type which I may be mn'nufaotiued quickly andcheaply.

Another oh'ectis to provide a; durable article of the" type describedwith a. mini-1 mum-use of metal. r

Another object is to provide an article of the type described" which mayhe mentifactored in large quantities by simple and comparativelyinexpensive machinery.

()therfohjeets'will he in part obvious in part poinredout hereinafter. IThe invention accordingly consists in the' features 'of 'eonsiructioncombinations o'l! eleinenis and 'arifangemehlof mrls Wlllil'l will beexemplified in "she oonsrruct-ion hen inaf'ter se't forth, and the scopeof he nppli cation of'whiuh will be indicated 'in the following claims.

In the drawin s wnerein is shown one of the various possilileembodiments of the in venlion, Figure 1 represents a blank from whichthe finished article may be inside; Fig.2 represents rhe partiallycompleled article; Fig. 3 represents the co nplee article; Fig. 4 is aplanview looking from above in Fig. 3fand Fig. 5 is a cross sectional'view showing the device applied "to a molding surface.

In Fig. l of the drawing shown blank of thin sheet metal which may ofany and desired eomoosition for oxam' le Cl'lfif-J tin plate, or thelike, from which the nail structure isio be made. This blank ispreferably in the form of rectangular oblong thin strip havingoppositely disposed longitudinal edges 1 and 2 and oppositely 90586 ends3 and 4. y

I In manufacturing the nail siructure, the blank may be formed into anydesired shape.

in Fig. 3.

As shown in Fig. 2 it is preferabl rolled into a substantiallycylindricalfiubn e1 fdrffi with the longitudinal edges 1 and Qediii centone another and spaced :1 short ammo apart. These edges may be broughtinto desired degree of proximity; Kilt-ii at!" r ling or bending thethin sheet-into t cylindrical form; as shown in Fig. 2 h-" heed portionmay be made upon the en-dof the eylinder by spreading, bending 0rcrimping the metal, thus formlng an inte'gra-l surface or head 5. atsubstantially right'ai'igles to the remainder of the cylinder which conjstitotes the hollow body portion 6',- as shown Aifter bending orotherwise dis-v posing the end 3 of Lhe blank at right angle;

to the body portion, thishezrdm'ay' be con veniently shaped intosubstantially annular form as shown In Fig. 4: by plac'mg the sur face 5in adie and preferably bringing the edges 1 and '2, which arecoritii'nmtions of f the edges 1 and 2 of the body portion, into anyvdeeired c'legree of proximity.

As heretofore ind icatedjhe nail structure described is particularly"lad-a ted for foundry Work and is shown in 'fig. 5 ashere employed. 7.designnlese' dorewhioh is a'dapfed to he held in position-Within themold and spaced from the; sand The sand as shown is so shaped Hml iiprori'rles fil fln't 'moldi'ng Surface 9, along which the metal isadapted to How and a depressed surfa-ee 10 providing corners .11.; Thenails shown are nda pfed to he placed with i'lieir heads 5 oulerl-nostalong the Bill surf-are 9; l hey are also shown in he dern'essed,portion E0 and at the corners or iillels ll. llhen-the nails;

. are thus placed they are axllzrpted-jto subsizom itiolly prevent thedislodgment of portions 0? tho sand when hot meta-l flows thereover andare (hos adapted lo preserve the a, that it may.

V It be iinderstoodithatathetermsand is used broadly- :thro'ughoutthisede eri tlon material adapted 'for use in forming amold."

"It will also be understood that the termhollow; used throughout in abroadsense as: denoting merely that: the article'so qualified. is notsolid but is so shaped as-to extend 'abti'n't, or-partially about, thematter in which it is inserted.

" The nails made accordingfito the above are durable, are cheap tomanufacture and serve their purpose admirably. The nails inay be made.with great rapidity by inexpensive'machinery and it has been found inactual practice-in-making nails o'f'this type used than in'the case ofwire nails. It will alithus be seen that the invention hereshownaccomplishes, among others, 'the objects above enumerated. 7

-As many changes could be made in the above construction and manyapparently widely difierent embodiments of this invention could be madewithout departing fromthe scope thereof, it. is intended that all-matter contained in the above description or shown in theaccompanyingdrawings shall interpreted as illustrative and not in a. :limitingsense. It is .alsofto be understood.

that the language used in the following claims-is intended to cover allof thegeneric .cla iin "as new and 1 ters atent is: in; I Wendycurvedmay and Specific features of the invention herein described,- and allstatements ofthe scope of theinvention which, as a matter of lan gua-ge,might be saidj-to fall-therebetvyeen'.

Having described my invent-ion what I desire 'to secure Let- 1. Ahollowmol an, flatghea'd formed to lie injaplane substantially at rightangles tosaidbodv.

2. A mold *nail haying transversely curved body of substantially uniform*crosssection-throughout its length and a fiat head combination,

formed to lie in a plane substantially at v y right angles to said body.andt-he following claims tadenote any ose vlie in a'plane at an angle tothe axis of the body.

5. The art of making a' mold winch comprises forming a sheet metaldevice into a shape havinga bend or curve and forcing said device intothe sand-of the mold in the direction of the axis of said curve.

that the metal is ,far morev economically combination,- a sand mold, anda plurality of sheet metal devices lying within the sand of said moldand substantially normal to its inner surface. V

7.' In apparatus of the class'described, in a sand mold, and a pluralityof stitfenin longitudina recess and lying within the sand of said moldadjacent its Inner surface.

8. In apparatus of the class described, in

combination, a sand mold, and a plurality of sheet metald'evices restingwithin the sand of said mold substantially normal 'to devices eachprovided ith a its inner surface and each formed to extend about-andembrace a portion of the sand. I 9. In apparatus of the class described,in combination, a sand mold, and aplurality of'sheet metal'deviceseachhavinga tubu 'lar po rti'onresting within and ei'nbracing thesandwof the mold and having a head por tio n lying substantially flushwith-the inner try; so of the mold; I stimo'ny whereof I afiix mysignafth'e presence of two witnesses. V

OTHO V. KEAN. .\Vitnesses 1 EJT. BAKER, M. R. Cums,

